Tm,Yb:NaGd(WO_4)_2激光晶体生长及光谱性能  

Growth and Fluorescence Properties of Tm,Yb:Na Gd(WO_4)_2 Laser Crystal

作　　者：刘旺[1] 董玮利[1] 赵舒燕 许蓝云 曾繁明[1] 李春[1] 林海[1] 

机构地区：[1]长春理工大学材料科学与工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2016年第3期88-91,共4页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省科技厅项目(20160414043GH);吉林省经济结构战略调整引导资金专项项目(2015Y069);长春市科技局科技项目(14KP017;14KT023;14GH011)

摘　　要：采用中频感应提拉法,生长铥镱共掺钨酸钆钠[Tm,Yb:Na Gd(WO_4)_2,Tm,Yb:NGW]激光晶体;讨论了Tm,Yb:Na Gd(WO_4)_2晶体生长工艺参数,获得了合适的晶体生长工艺参数:拉速1~2mm/h,转速20~22r/min,降温速率10℃/h。研究了Tm,Yb:NaGd(WO_4)_2晶体的荧光光谱。结果表明,在980nm激光的激发下,该晶体在1031mm、1772nm附近获得了较强的荧光发射,分别对应于Yb3+离子的2F5/2→2F7/2能级跃迁以及Tm3+离子的3F4→3H6能级跃迁,1772nm处的半高宽为72nm左右。Thulium and ytterbium co-doped gadolinium sodium tungstate [Tm,Yb：Na Gd（WO_4）_2,Tm,Yb：Na Gd（WO_4）_2]laser crystal was grown by medium frequency induction Czochralski method. Tm,Yb：Na Gd（WO_4）_2 crystal growth process parameters are discussed. A suitable crystal growth process parameters were ensured with the pulling speed of 1~2mm/h,the speed of 20~22r/min and the cooling rate of 10℃/h. The results showed that under 980 nm excitation laser,strong fluorescence emission of crystal located at about 1031 nm and 1772 nm which corresponding to the ~2F_（5/2）→~2F_（7/2） transition of Yb^（3＋）ions and ~3F_4→~3H_6 transition of Tm^（3＋） ions,respectively,and the full width at half maximum（FWHM）of the peak at 1772 nm reaches 72 nm.

关 键 词：提拉法 Tm Yb:NaGd(WO4)2 晶体生长 荧光光谱 

分 类 号：O782[理学—晶体学] O734